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Current Electricity

Current Electricity
The maximum current rating for a 10 kΩ, 0.5 W resistor is

14.14 mA
28.28 mA
0.707 mA
7.07 mA

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Current Electricity
The resistance of a straight conductor is independent of

Temperature
Material
Shape of cross-section
Cross-sectional area

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Current Electricity
A copper wire is stretched so that its length is increased by 0.1 % . The change in its resistance is

None of the listed here
0.4%
0.3%
0.2%

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Current Electricity
A current of 16 amperes divides between two branches in parallel of resistances 8 ohms and 12 ohms respectively. The current in each branch is

4.6 A, 9.6 A
6.4 A, 6.9 A
4.6 A, 6.9 A
6.4 A, 9.6 A

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Current Electricity
Ohm's law is not applicable to

Carbon resistors
Circuits with low current densities
High voltage circuits
Vaccum tubes

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Current Electricity
The substances which have a large number of free electrons and offer a low resistance are called

Conductors
Semi-conductors
Insulators
Inductors

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MORE MCQ ON Current Electricity

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